src/third_party/WebKit/Source/WTF/wtf/url/src/URLCanonMailto.cpp

/*
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// Functions for canonicalizing "mailto:" URLs.

#include "config.h"
#include "URLCanon.h"

#include "RawURLBuffer.h"
#include "URLCanonInternal.h"
#include "URLFile.h"
#include "URLParseInternal.h"

#if USE(WTFURL)

namespace WTF {

namespace URLCanonicalizer {

namespace {


template<typename CharacterType, typename UCHAR>
bool doCanonicalizeMailtoURL(const URLComponentSource<CharacterType>& source, const URLSegments& parsed, URLBuffer<char>& output, URLSegments& outputParsed)
{
    // mailto: only uses {scheme, path, query} -- clear the rest.
    outputParsed.username = URLComponent();
    outputParsed.password = URLComponent();
    outputParsed.host = URLComponent();
    outputParsed.port = URLComponent();
    outputParsed.fragment = URLComponent();

    // Scheme (known, so we don't bother running it through the more
    // complicated scheme canonicalizer).
    outputParsed.scheme.setBegin(output.length());
    output.append("mailto:", 7);
    outputParsed.scheme.setLength(6);

    bool success = true;

    // Path
    if (parsed.path.isValid()) {
        outputParsed.path.setBegin(output.length());

        // Copy the path using path URL's more lax escaping rules.
        // We convert to UTF-8 and escape non-ASCII, but leave all
        // ASCII characters alone.
        int end = parsed.path.end();
        for (int i = parsed.path.begin(); i < end; ++i) {
            UCHAR uch = static_cast<UCHAR>(source.path[i]);
            if (uch < 0x20 || uch >= 0x80)
                success &= AppendUTF8EscapedChar(source.path, &i, end, output);
            else
                output.append(static_cast<char>(uch));
        }

        outputParsed.path.setLength(output.length() - outputParsed.path.begin());
    } else {
        // No path at all
        outputParsed.path.reset();
    }

    // Query -- always use the default utf8 charset converter.
    CanonicalizeQuery(source.query, parsed.query, 0, output, &outputParsed.query);

    return success;
}

} // namespace

bool canonicalizeMailtoURL(const char* spec, const URLSegments& parsed, URLBuffer<char>& output, URLSegments& outputParsed)
{
    return doCanonicalizeMailtoURL<char, unsigned char>(URLComponentSource<char>(spec), parsed, output, outputParsed);
}

bool canonicalizeMailtoURL(const UChar* spec, const URLSegments& parsed, URLBuffer<char>& output, URLSegments& outputParsed)
{
    return doCanonicalizeMailtoURL<UChar, UChar>(URLComponentSource<UChar>(spec), parsed, output, outputParsed);
}

bool replaceMailtoURL(const char* base, const URLSegments& baseParsed,
                      const Replacements<char>& replacements,
                      URLBuffer<char>& output, URLSegments& outputParsed)
{
    URLComponentSource<char> source(base);
    URLSegments parsed(baseParsed);
    SetupOverrideComponents(base, replacements, &source, &parsed);
    return doCanonicalizeMailtoURL<char, unsigned char>(source, parsed, output, outputParsed);
}

bool replaceMailtoURL(const char* base, const URLSegments& baseParsed,
                      const Replacements<UChar>& replacements,
                      URLBuffer<char>& output, URLSegments& outputParsed)
{
    RawURLBuffer<char> utf8;
    URLComponentSource<char> source(base);
    URLSegments parsed(baseParsed);
    SetupUTF16OverrideComponents(base, replacements, utf8, &source, &parsed);
    return doCanonicalizeMailtoURL<char, unsigned char>(source, parsed, output, outputParsed);
}

} // namespace URLCanonicalizer

} // namespace WTF

#endif // USE(WTFURL)